CHICAGO (AP) - A man was arrested Friday by federal agents on charges of planning to set off hand grenades in garbage cans at a shopping mall. Derrick Shareef, 22, of Rockford, was arrested when he met with an undercover agent in a parking lot to trade a set of stereo speakers for four hand grenades and a handgun. Federal officials said he planned to set off four hand grenades in garbage cans at the CherryVale shopping mall in Rockford, about 90 miles northwest of Chicago. He was charged with one count of attempting to damage or destroy a building...